import { ImageScanner } from './ImageScanner';
import { Symbol } from './Symbol';
export declare const getDefaultScanner: () => Promise<ImageScanner>;
export declare const scanGrayBuffer: (buffer: ArrayBuffer, width: number, height: number, scanner?: ImageScanner | undefined) => Promise<Array<Symbol>>;
export declare const scanRGBABuffer: (buffer: ArrayBuffer, width: number, height: number, scanner?: ImageScanner | undefined) => Promise<Array<Symbol>>;
export declare const scanImageData: (image: ImageData, scanner?: ImageScanner | undefined) => Promise<Array<Symbol>>;